A Civilisation is a dominant community that imposes its beliefs upon all other communities by violence (war) or its threat, which must involve the threat, or use of, genocide so any community that recoils from inflicting genocide will suffer genocide.

Its Empire of Colonies: All those communities that survive by submitting to the demands of the dominant community insensibly adopt some of the traditions of their new ruler, so becoming its colonies; and together these colonies form its empire.